Pauatahanui Stream at Gorge
Daily maximum flow and suspended sediment concentration (SSC) for the 2018/19 monitoring season. SSC is predicted using a turbidity vs discrete SSC model that is updated annually, see last year’s report for more information. The flow event lines represent the flow level at which we would expect n years before another event that size.
Toggle between tabs to see sediment yields/loads of key events and annual totals.
Event Loads
| Event | Duration | Sediment load (t) | Sediment yield (t/ha) | Max flow (m3/s) | Flow return period (years) |
|---|---|---|---|---|---|
| 08-07-2018 - 10-07-2018 | 2 days, 7 hrs & 20 mins | 403 | 0.11 | 25.5 | 1 |
| 20-08-2018 - 22-08-2018 | 2 days, 15 hrs & 55 mins | 222 | 0.06 | 10.0 | <1 |
| 03-09-2018 - 05-09-2018 | 2 days, 2 hrs & 40 mins | 118 | 0.03 | 12.4 | <1 |
| 02-12-2018 - 02-12-2018 | 0 days, 4 hrs & 30 mins | 444 | 0.12 | 28.8 | 1 |
| 19-12-2018 - 20-12-2018 | 1 day, 16 hrs & 15 mins | 424 | 0.11 | 23.6 | 1 |
| 31-05-2019 - 02-06-2019 | 2 days, 7 hrs & 30 mins | 134 | 0.04 | 10.0 | <1 |
Annual Loads
| Year | Time | Sediment load (t) | Sediment yield (t/ha/yr) |
|---|---|---|---|
| 2013 | 202 days 12 hrs | 2,364 | 0.63 |
| 2014 | 365 days | 851 | 0.23 |
| 2015 | 365 days | 4,035 | 1.07 |
| 2016 | 366 days | 9,845 | 2.62 |
| 2017 | 365 days | 2,016 | 0.54 |
| 2018 | 365 days | 2,297 | 0.61 |
| 2019 | 168 days | 220 | 0.06 |
| Total | 2,196 days 12 hrs | 21,628 | 5.75 |
